When it gets hot, my whole body itches like needles pricking me

If you feel itchy all over your body when it's hot, it may be a symptom of allergy. You should go to the hospital for a physical examination to improve your body's immunity.

If you feel itchy all over your body when you get hot, it may be a common allergic symptom called cholestatic urticaria, which is mainly manifested by localized edema or stinging on the skin and mucous membranes. Sometimes wheals may appear on the skin. Severe patients may also have symptoms such as headache and tears. The cause of this disease may be that the local skin of the body has risen after exercise stimulation or drinking, which prompts the body to release acetylcholine, which may cause itching and pain on the skin. Sometimes the bath water is too hot, or the clothes are too tight, which may cause stinging and itching on the skin after exercise. Usually, it occurs in young people, and when the mental stress is too great, it may cause repeated attacks of the disease.

If you feel itchy all over your body as if being pricked by needles when you get hot, you can use antihistamines under the guidance of a doctor. Commonly used drugs include cetirizine, loratadine, etc. You can apply ointment with antipruritic effect on the skin, such as calamine lotion or glucocorticoid ointment. Don't use too high a water temperature when taking a bath.